Craft knife for cutting circles
Description
Claims
The ornamental design for a craft knife for cutting circles, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
| D298409 | November 8, 1988 | Sugiyama |
| 6094824 | August 1, 2000 | Takeshita |
| D445660 | July 31, 2001 | Okada |
| 7073263 | July 11, 2006 | Kawasaki |
| D536231 | February 6, 2007 | Kawasaki |
| D544321 | June 12, 2007 | Wyss |
| 7290340 | November 6, 2007 | Lin |
| 7434319 | October 14, 2008 | Tsai-Lian |
| 7444749 | November 4, 2008 | Chen |
| 20070022615 | February 1, 2007 | Tsai-Lian |
| 20080040932 | February 21, 2008 | Gullicks et al. |
| 20080244911 | October 9, 2008 | Chang |
- Olfa 45mm Quick Blade Rotary Cutter. Downloaded Feb. 26, 2010 at http://www.pelennapatchworks.co.uk/olfa-45mm-quick-blade-rotary-cutter-1534-p.asp.
Patent History
Patent number: D633771
Type: Grant
Filed: Apr 17, 2009
Date of Patent: Mar 8, 2011
Inventor: Pi-Chao Chang (Taichung County)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/311,542
Type: Grant
Filed: Apr 17, 2009
Date of Patent: Mar 8, 2011
Inventor: Pi-Chao Chang (Taichung County)
Primary Examiner: Philip S Hyder
Assistant Examiner: Roselynne Cody
Application Number: 29/311,542
Classifications
Current U.S. Class:
D8/98